Construction for jacks and the like



Feb. 10. 1925- 1525402 R. L. TAFT CONSTRUCTION FOR JACKS AND THE L KE:

Filed June 2, 1922 n Savanna;

Patented F eb. 10, 1925.

UNITED STATES 1,526,102 PATENT OFFICE.

RYLAND L. TAFT, OF PROVIDENCE. RHODE ISLANT), ASSIGNOR TO MARTIN-COPE- LAND COMPANY, or PROVIDENCE, R-HODE ISLAND, A

'rIo 'OF'RHODE ISLAND.

VOLUNTARY AssocIA- CONSTRUCTION FOR JAGKS AND LIKE.

Application filed-June 2, 1922. Serial No. 565,449;

To altar/710m it may concern Be it known that I RYLAND L. TAF'r, a citizen of the United States, and a resident of Providence, in the county of Providence and State of Rhode Island, have invented an One of the objects thereof is to provide a 1 construction ofuthe abovenature which is 26 Theinvention accordingly consists in the features of construction, combinations of elements and arrangements of parts as will be exemplified in the structure to be hereinafter described and the scope of the application of which will be indicated inthe'followin claims.

' n the accompanying drawing. in which is shown one of the various possible embodiments of this invention,

Figure 1 is a side elevation of a jack showing a plug in position, certain parts being out way for clearness; and

Figure 2 is a view corresponding to that shown in Fig. 1 showing the plug partly removed.

Similar reference characters refer to similar parts in both views of the drawing.

Referring now to the drawing in detail, there is shown an insulating base or supporting member preferably built up of a plurality of superimposed layers of non-conductive material, such as hard rubber, between the successive layers of which are held a plurality of spring contact members such as 11, 12, 13 and 14. Resting against the bottom of the insulating member 10 is an arm 15 into which are threaded screws, such as 16, which pass through member 10, conductors 11, 12, 13 and 14, and securely clamp these parts together andin tight relation to the arm 15. The screws 16 passing through the spring contacts 11, 12, 13 and 14 are insulated therefrom in any suitable manner and thus the spring contacts are efi'ectually insulated one from, the other and from the arm 15,.

At the right-handend of arm--15 is secured a supporting and guiding sleeve 17 through which a plug 18 is adapted to he received and which is so positioned as to guide the plug into engagement with thcspring contacts of the jack. as will be hereinafter described. 15 particularly adapted to recelve a plug and In Fig. 2 the plug, which in this instance comprises a sleeve contact 19 and a tip contact 20 insulated from each other and mounted upon a suitable support as 21, is shown partially withdrawn from the jack. In this positionwith the plug removed the spring contacts 11 and 120i the jack are in electrical contact through their contact points, as

arethe spring contacts 13 and 14. Adjacent its end contact 11 is provided with an inwardlv bent portion 22 and contact 14 is provided with a similar portion 23. As the plug is thrust into the jack to .the position shown in Fig. 1, the sleeve 17 guides the plug betweenthe springs 11 and 14 and the bent portions 22 and 23 sliding over the plug cause separating of the springs 11 and 14 and their disengagement from the contacts 12 and 13. Then, as shown in Fig. 1, contacts 11 and 14 are pressed by their springing action into firm contact with the sleeve 19 and the tip 20 respectively.

Projecting from the insulating supporting member 10 and substantially in line with the opening of sleeve 17 through which the plug is inserted is a member 24 which is preferably of insulating material formed integrally with one of the layers of insulating material comprising the supporting member It will thus be seen-that there is herein provided an apparatus which embodles the. various features ofthis invention, which apparatus in its-action attains the various objects of the invention and is well adapted .to meet the requirements of practical use.

As many possible embodiments may be made of the. above invention and as many changes might be made in the embodiment herein set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to belinterpreted as illustrative and not in a limiting sense. I claim as my invention: 1. In construction for jacks and the like, in combination, a jack adapted to receive a plug and insulating means on said jack in substantial alignment with said plug adapted to form a stop to limit the move-v vment ofsaid plug into saidjack.

2. In construction for. jacks and the like, in combination, a jack adapted, to receive a plug and having a plurallty; of spring contacts one of which is adaptedto make contact with said plug and a stop device positioned upon said jack adapted to engage said plug adjacent the end thereof and to prevent contact of said plug with others of said spring contacts.

3. In construction for jacks and the like, in combination, a jack adapted to receive a plug and having a pair of contact members oneof which is adapted to make contact with said plug and means mounted upon said jack in substantial alignment with i said plug adapted to form a substantially rigid stop to prevent contact of said other I contact member with said plug.

4.111 construction for jacks and the-like,

in combination, a jackadapted to receive aplug, said jack having a block of'insulat- "ing material supporting a contactmember radapted to make contact with said plug,

In. construction for jacks and .the like,

incombination, a jack adapted toreceive a plug, said jack having a'plurality' of spring contacts and insulating members thercbetween, one of said insulating members being extended into the path of movement of said plug to form a stop therefor.

(3. In construction for jacks and the like, in eon'ibination a jack adapted to receive a plug, contact members upon said jack positioned substantially in line with the path of movement of said plug into said jack and not adapted'tomake contact with said plug, contact members upon said jack adapted to make contact with said' plug, and insulating means upon said 'jack positioned in line with the path of movement of said plug into said jack adapted to engage the end of said plug forming a'stop therefor to prevent contact of said plug with said first contact-members and permit contact of said plug with said secondcontact members.

7. In construction for jacks and the like,

an insulating member positioned betweensaid second pair of contact members, adapted to form a stop for said plug to prevent contact thereof with said second pair of contact members.

In testimony whereof, I have signed my name to this specification'this 23rd day of May 1922.

I RYLAND L; TAFT. 

